Mode of adjusting- the slats of window-blinds



UNITED STATES PATENT OFFICE.

B. C. ENGLISH, OF HARTFORD, CONNECTICUT.

MODE 0]? ADJUSTING- THE SLATS OF WINDOW-BLINDS.

Specification of Letters Patent No. 15,758, dated September 23, 1856.

To all whom it may concern:

Be it known that I, BENAJAH C. ENGLISH, of Hartford, in the county ofHartford and State of Connecticut, have invented a new and usefulMechanical Arrangement for Adjusting the Slats of Window-Blinds; and Ido hereby declare that the following is a full, clear, and exactdescription of the construction and operation of the same, referencebeing had to the annexed drawings, making a part of this specification,in which Figure 1 is a perspective view, showing the window frame, withthe blind partly open. Fig. 2, is a working drawing of the parts thatare attached to the window frame.

A, is the gear wheel which turns freely in the side piece, 13.

C, is the faceplate, through, which the teeth of the gear, A, project,and is attached to the side piece, B, thereby forminga frame by whichthe gear A, is held securely to the window frame.

D, is a square hole through the axis of the gear wheel, A, and throughwhich the square shank, E, upon the rod, F, passes.

G is a knob which is attached to the rod, F, for the purpose ofoperating the adjuster. j

H, is an escutcheon which is fastened to i the window casing, upon theinside, and allowing the rod F, to turn freely therein.

I, is a spiral spring which presses upon the escut-cheon, H, and, theclutch, J, for the purpose of throwing the clutch, J, upon the clutchpins, K, K, thereby fastening the gear, A, from moving, until the knob,G, is pulled out sufliciently to allow the clutch, J,

to turn free from the clutch pins K, K, then by turning the knob, G, thegear, A, is moved and upon releasing the knob, G, the spring, I, causesthe clutch, J, to fasten upon the clutch pins K, K.

Fig. 3, is a working drawing of that part which is attached to theblind. M, is a cap which is fastened to the frame of the blind. N, is anarm which is fastened to a slat of the blind, at the smallest end, theother end being attached to the rod, 0, which passes through the slot,P, in the cap, M, and through the studs, Q, Q, and is bent at rightangles for the purpose of attaching it to the spiral spring R, upon therod, S, the object of the spring, B, being to throw the arm, N, overthereby causing it to close the slats of the blind. T, is a rack towhich the arm N,

is attached, and slides freely upon the rod, S.

The two parts of the apparatus as described in Figs. 2 and 3, afterbeing attached in their respective places upon the window frame andblind are operated in the following manner. By shutting the blind therack, T, is brought into connection with the gear wheel, A, and bypulling the knob, G, slightly toward the operator, it releases theclutch, J, from the clutch pins, K, K, the knob, G, can then be turnedto the right or left as the case may be, thereby communicating motion tothe gear wheel, A, which gives motion to the rack, T, thereby causing itto slide on the rod, S, by this means giving motion to the slats of theblind. Upon releasing the grasp upon the knob G, the spring, I, throwsthe clutch J, upon the clutch pins, K, K, thereby fastening it securelyat any required position, and holding the slats firmly at any angle sothat they cannot be moved while the blind is shut except from the insideof the window and b the use of the knob, G.

hat I claim as .my invention and desire to secure by Letters Patent isas follows:

1. I claim the manner of adjusting the slats of Window blinds by the useof the gear wheel and rack.

2. I claim the method of fastening the slats at any required angle, bythe use of the clutch.

8. I claim the whole in combination, as herein set forth.

BENAJAH C. ENGLISH.

Witnesses:

H. K. W. WELcH, L. A. SToRRs.

